<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
<script>
var num = 1326322747726364672
// console.log(num)//1326322747726364700

var res = '{"art_id": 1326322747726364672}'
var data = JSON.parse(res)
// console.log(data.art_id)//1326322747726364700

// 通过json-bigint
var res = '{"art_id": "1326322747726364672"}'

var data = JSON.parse(res)
console.log(data.art_id)
</script>
</html>